illusionsScience

It’s All In Your Head

Pareidolia’s an interesting phenomenon. It’s basically an effect wherein your brain detects a pattern where there isn’t one. For example, Phil Plait just posted the following on his Bad Astronomy blog.


Now, a lot of people, looking at that particular combination of light and shadow, see something like this.

Phil claims he sees this.

I saw this.

And this.

And, after a suggestion by Dave R, this.

Why? Why does your brain do this? What’s the point? The thing is, visual information is very noisy. The fact that we can make any sense at all out of the photons plowing into our eye-holes is nothing short of amazing. And, from a survival characteristic point of view, seeing patterns where there are none is slightly less fatal than missing ones that are there. (Hmm, that jumble of earthtones bounding toward me is making a growling sound. I wonder if… ACK!)

Also, think about what you’re doing right now. You’re looking at an array of dots that are lit up in an arrangement that mimics a series of inscriptions on paper, which in turn represents a sequence of vocalizations to which humans have learned to ascribe meaning.

A lot of the mechanisms that your brain uses to wring some sort of meaning out of those blinking dots also cause you to see Jesus in a banana, or angry slippers, or Yoda in a cloud. It’s not such a bad trade-off, overall.

And if those same quirky brain mechanisms also allow me to look at a bunch of blobs of paint on canvas and see this…

…I’m OK with that.

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Steve D

Steve D

Steve consists of approximately 60% water and 40% organic molecules, arranged in a configuration that is, among over things, capable of describing itself in this manner.

6 Comments

  1. August 13, 2011 at 2:21 pm

    Noooo they be stealin’ my pious illusions

  2. August 13, 2011 at 4:09 pm

    I like the Ood.

  3. August 13, 2011 at 7:31 pm

    I have a picture of a stain in a wall. People still swear for Jeebuz, but when I posted a photo of it on the net, a friend found the most striking resemblance. It is, incontestably, Friedrich Nietzsche.

  4. August 14, 2011 at 1:56 am

    I see a smiley face in starry night.

  5. August 14, 2011 at 1:58 am

    Also? Pareidolia is the name of my death metal cover band.

  6. August 14, 2011 at 3:22 am

    My best pareidolia have come in dim light early in the morning or late at night while in bed. I can lie wondering what the giant chess piece in my bedroom that I’ve never seen before actually is for long seconds before realizing it’s a jacket and a shadow on my wall, and then, sadly, the chess piece is gone for ever.

    Only thing near-sightedness is good for.

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